Swath Data File: 0492_20031031_004752p.mb57 MBIO Data Format ID: 57 Format name: MBF_EM300MBA Informal Description: Simrad multibeam processing format Attributes: Old and new Simrad multibeams, EM12S, EM12D, EM121, EM120, EM300, EM100, EM1000, EM950, EM1002, EM3000, bathymetry, amplitude, and sidescan, up to 254 beams, variable pixels, ascii + binary, MBARI. Metadata: Vessel: Revelle Institution: SIO Platform: Ship Sonar: Simrad_EM-120 Sonar Version: EM120_Version_5.2u1-Kongsberg_Simrad_Norway_A/S_Horten Cruise ID: DANA02RR Cruise Name: Dana_Expedition_Leg_02 PI: Dr._Peter_Lonsdale PI Institution: Scripps_Institution_of_Oceanography Client: NSF/OCE0203636 Corrected Depths: YES Tide Corrected: NO Depths Manually Edited: NO Depths Auto-Edited: NO Roll Bias: -0.490000 degrees Pitch Bias: 0.140000 degrees Heading Bias: 0.000000 degrees Draft: 6.000000 m Data Totals: Number of Records: 187 Bathymetry Data (191 beams): Number of Beams: 35717 Number of Good Beams: 34844 97.56% Number of Zero Beams: 873 2.44% Number of Flagged Beams: 0 0.00% Amplitude Data (191 beams): Number of Beams: 35717 Number of Good Beams: 34844 97.56% Number of Zero Beams: 873 2.44% Number of Flagged Beams: 0 0.00% Sidescan Data (1024 pixels): Number of Pixels: 191488 Number of Good Pixels: 190464 99.47% Number of Zero Pixels: 0 0.00% Number of Flagged Pixels: 1024 0.53% Navigation Totals: Total Time: 0.9934 hours Total Track Length: 23.9255 km Average Speed: 24.0843 km/hr (13.0185 knots) Start of Data: Time: 10 31 2003 00:48:06.225000 JD304 Lon: -83.8908 Lat: -6.5398 Depth: 4055.8200 meters Speed: 23.5800 km/hr (12.7459 knots) Heading: 320.7400 degrees Sonar Depth: 6.0300 m Sonar Altitude: 4049.3600 m End of Data: Time: 10 31 2003 01:47:42.489000 JD304 Lon: -83.9727 Lat: -6.3637 Depth: 4094.4000 meters Speed: 24.1200 km/hr (13.0378 knots) Heading: 32.6800 degrees Sonar Depth: 5.7600 m Sonar Altitude: 4088.6400 m Limits: Minimum Longitude: -84.1002 Maximum Longitude: -83.8128 Minimum Latitude: -6.5996 Maximum Latitude: -6.3086 Minimum Sonar Depth: 4.9000 Maximum Sonar Depth: 6.3600 Minimum Altitude: 3710.2400 Maximum Altitude: 4094.0800 Minimum Depth: 3424.0800 Maximum Depth: 4507.6800 Minimum Amplitude: -37.0000 Maximum Amplitude: 4.0000 Minimum Sidescan: 0.0000 Maximum Sidescan: 65.3100 Data Record Type Notices: DN: 187 MB_DATA_DATA (ID=1): survey data DN: 56 MB_DATA_COMMENT (ID=2): comment DN: 1 MB_DATA_VELOCITY_PROFILE (ID=6): SVP DN: 1 MB_DATA_START (ID=10): Simrad start datagram DN: 3568 MB_DATA_NAV (ID=12): Navigation record DN: 53 MB_DATA_RUN_PARAMETER (ID=13): Simrad runtime parameter datagram DN: 3568 MB_DATA_CLOCK (ID=14): Simrad clock datagram DN: 357 MB_DATA_HEADING (ID=17): Heading record DN: 3568 MB_DATA_ATTITUDE (ID=18): Attitude record DN: 18 MB_DATA_SSV (ID=19): Surface sound speed record Nonfatal Error Notices: EN: 56 MB_ERROR_COMMENT (ID=-5): Comment record EN: 11134 MB_ERROR_OTHER (ID=-8): Neither a data record nor a comment record EN: 1 MB_ERROR_NOT_ENOUGH_DATA (ID=-21): Not enough data to perform spline interpolation Problem Notices: PN: 1 DATA PROBLEM (ID=2): Zero longitude or latitude in survey data PN: 1 DATA PROBLEM (ID=3): Instantaneous speed exceeds 25 km/hr Coverage Mask: CM dimensions: 10 10 CM: 1 1 1 1 0 0 0 0 0 0 CM: 1 1 1 1 1 1 1 1 0 0 CM: 1 1 1 1 1 1 1 1 0 0 CM: 1 1 1 1 1 1 1 1 1 0 CM: 1 1 1 1 1 1 1 1 1 1 CM: 1 1 1 1 1 1 1 1 1 1 CM: 0 1 1 1 1 1 1 1 1 1 CM: 0 0 1 1 1 1 1 1 1 0 CM: 0 0 0 1 1 1 1 1 0 0 CM: 0 0 0 1 1 1 0 0 0 0